Domain name

Valid characters:
  • Number range is 0…9
  • Alpha characters in the range of A…Z (upper or lower case)
  • dash
  • period
  • Maximum of 48 valid ASCII characters
  • Do not use a period or a dash for the first and last character
  • Use only alpha characters in the last portion
  • Do not use two periods next to each other
Valid domain name format:
  • a.b.c.d
  • a.b.c
  • a.b
  • a
Legal domain names example:
  • xyz.xxx.yyy.com
  • 123.xxx.yyy.com
  • 123.123.123.com
  • 123.123.com
Illegal domain name example:
  • 123.345.789.123
  • 1234567890
  • 123.
  • .467
  • 123..com
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